DTC B10E7:12 [REAR ONE-TOUCH WALK-IN CONTROL MODULE]

id0902t1990500

Description	IG1 relay circuit malfunction
Detection condition	• Rear one-touch walk-in control module detects a short to power supply in the IG1 relay circuit.
Fail-safe	• Inhibits the rear one-touch walk-in operation function from being driven for the second-row seat (LH). • Inhibits the rear one-touch walk-in operation function from being driven for the second-row seat (RH).
Possible cause	• IG1 relay malfunction • Rear one-touch walk-in control module connector or terminal malfunction • Short to power supply in wiring harness between IG1 relay terminal C and rear one-touch walk-in control module terminal 1G • Rear one-touch walk-in control module malfunction

Diagnostic Procedure

Step	Inspection		Action
1	INSPECT IG1 RELAY • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Remove the IG1 relay. (See RELAY LOCATION.) • Inspect the IG1 relay. (See RELAY INSPECTION.) • Is the IG1 relay normal?	Yes	Go to the next step.
1		No	Replace the IG1 relay, then go to Step 5. (See RELAY LOCATION.)
2	INSPECT REAR ONE-TOUCH WALK-IN CONTROL MODULE CONNECTOR CONDITION • Disconnect the rear one-touch walk-in control module connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
2		No	Repair or replace the connector, then go to Step 5.
3	INSPECT IG1 RELAY CIRCUIT FOR SHORT TO POWER SUPPLY • Verify that the rear one-touch walk-in control module connector is disconnected. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Switch the ignition ON (engine off or on). • Measure the voltage at the rear one-touch walk-in control module terminal 1G (wiring harness-side). • Is the voltage 0 V?	Yes	Go to the next step.
3		No	Refer to the wiring diagram and verify whether or not there is a common connector between IG1 relay terminal C and rear one-touch walk-in control module terminal 1G. If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to power supply. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to power supply. Go to Step 5.
4	INSPECT REAR ONE-TOUCH WALK-IN CONTROL MODULE • Inspect the rear one-touch walk-in control module. (See REAR ONE-TOUCH WALK-IN CONTROL MODULE INSPECTION.) • Is the rear one-touch walk-in control module normal?	Yes	Go to the next step.
4		No	Replace the rear one-touch walk-in control module, then go to the next step. (See REAR ONE-TOUCH WALK-IN CONTROL MODULE REMOVAL/INSTALLATION.)
5	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Reconnect all the disconnected connectors with the negative battery terminal disconnected. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Clear the DTC for the rear one-touch walk-in control module using the M-MDS. (See CLEARING DTC [REAR ONE-TOUCH WALK-IN CONTROL MODULE].) • Retrieve the rear one-touch walk-in control module DTCs using the M-MDS. (See DTC INSPECTION [REAR ONE-TOUCH WALK-IN CONTROL MODULE].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the rear one-touch walk-in control module. (See REAR ONE-TOUCH WALK-IN CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
5		No	Go to the next step.
6	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [REAR ONE-TOUCH WALK-IN CONTROL MODULE].)
6		No	DTC troubleshooting completed.